626971 has 4 divisors (see below), whose sum is σ = 628992. Its totient is φ = 624952.

The previous prime is 626963. The next prime is 626987. The reversal of 626971 is 179626.

626971 is an esthetic number in base 4, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 626971 - 2³ = 626963 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (626921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 436 + ... + 1201.

It is an arithmetic number, because the mean of its divisors is an integer number (157248).

2⁶²⁶⁹⁷¹ is an apocalyptic number.

626971 is a deficient number, since it is larger than the sum of its proper divisors (2021).

626971 is a wasteful number, since it uses less digits than its factorization.

626971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2020.

The product of its digits is 4536, while the sum is 31.

The square root of 626971 is about 791.8150036467. The cubic root of 626971 is about 85.5885793568.

The spelling of 626971 in words is "six hundred twenty-six thousand, nine hundred seventy-one".